<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        a:link{
            font-size: 13px;
            color: #0000FF;
            text-decoration: none;
        }
        a:visited{
            font-size: 13px;
            color: #00FFFF;
            text-decoration: underline;
        }
        .nav1{
            margin-left: 10px;
            background-color: #eee;
        }
        .nav1 span{
            margin-left: 10px;
            margin-right: 10px;
        }
        .nav1 a:link{
            color: #ff0000;
            text-decoration: underline;
            font-size: 17px;
            font-family: "黑体";
        }
        .nav1 a:visited{
            color: #ff0000;
            text-decoration: none;
            font-size: 17px;
            font-family: "黑体";
        }
        .nav1 a:hover{
            color: #000;
            font-family: "黑体";
            font-size: 17px;
            text-decoration: overline;
        }
        .footer{
            text-align: center;
            margin-top: 120px;
        }
    </style>
</head>
<body>
<h2 align="center">天地环保</h2>
<p class="nav1">
    <a href="#">首页</a>
    <a href="#">关于</a>
    <a href="#">客服</a>
    <a href="#">联系</a>
</p>
<div class="footer">
    <a href="mailto: anlge@163.com">联系我们</a>
</div>
</body>
</html>